Method of making button collets



STATES EMORY WARD STEARNS, OF ROSLYN, NEW YORK, ASSIGNOR TO PARKER, STEfitRNS &'

COMPANY, OF BROOKLYN, NEW YORK; A. CORPORATION OF NEW YORK.

METHOD OF MAKING BUTTON COLLIJTS.

Original application filed June 80, 1922, Serial No. 572,045. Divided and this application flledhprll 19,

1923. Serial No. 638,127.

a citizen of the United States, residing at Roslyn, in the county of Nassau and State of New York, have invented certain new and useful Improvements in Methods of Making Button Collets, of which the following is a specification.

This invention relates to the manufacture of molded rubber collets and particularly to the rubber collets. of buttons of the kind extensively used in the clasps forming parts of garters and hose supporters. Such clasps commonly comprise metal loops and rubber collets mounted on base plates provided with studs, posts or rivets which serve to secure the collets to the base plates. happens that the strain of the loops on the flan ed heads of the collets unduly bends or an brea the flanges of the collets or loosens or pulls the collets off of the base plates, and it is the object of my invention to so strengthen the collets that this difliculty may be corrected. as In carrying out my invention I embed a cloth or fabric of suitable texture in the flanged head of the collet which serves to give to it such strength" as to avoid all possibilit of undue bending or breaking. The so cloth is so embedded in the collet that it not only reinforces or strengthens it as a whole but it gives the desired strength to that part of the collet which engages the under or inner side of the flange or head of the post as or posts which connects the collet to the base plate, thus insuring a permanent connection between the button members.

In order to manufacture the button collets thus reinforced I em loy a sectional mold formed with a plurality of suitable recesses and rovided with suitable pins or posts to 've orm to a plurality of collets and I place etween two mold members a sheet of cloth and a sheet of unvulcanized L rubber. The 4A5 mold sections, the rubber, and the cloth are placed in. a press and when pressure is applied, he mold sections are forced towards each other, the recesses are filled, and'the desired form is given to the articles. In this operation the cloth is embedded in the flanged heads of the collets around the central openin therein. When this operation is complete the sheet of collets thus formed '1 vulcanized. The collets are cut from the Emory WARD Simone,-

It sometimessheet by dies or other suitable devices .and may be tumbled or otherwise finished.

In the accompanying drawings Figure 1 is a perspective view of one form of rubber hose supporter button collet mad 1n accordance with my invention.

Figure 2 is another perspective view of the same collet.

Figure 3 is a sectional View showing portions of the mold members and indicating how a sheet of cloth and a sheet of rubber are inserted between the mold sections before pressure is applied. a

Figure 4 is a sectional view showing the mold sections moved towards each other and in the position they assume before the molding of the rubber takes place.

igure 5 is a detail sectional view on an enlarged scale showing the appearance of the molded article afterthe completion of the molding operation.

Figure 6 is a perspective view of another form .of hose supporter button collet extensively used.

I Figure 7 is a perspective view of the same collet looking from a difl'erent angle.

Figure 8 is a detail sectional view of portions of mold members suitable for forming collets such as shown in Figures 6 and 7 Figure 9 is a sectional detail view on an enlarged scale indicating how a collet is formed in a mold of the kind shown in Figure 8.

.Fi re 10 is a detail perspective view indicating how the collets when first molded are joined by a thin sheet of rubber and fabric.

Figure 11. is a perspective view with parts broken away,'-parts in section, and parts shown in dotted lines. indicating how the rubber collet shown in Figure 1 is attached to a base plate.

Figure 12 is a similar view indicating how the collet shown in Figures 6 and 7 is'attached to a base plate.

Figure 13 is an enlar ed detail view irudieating how the soft rub er is forced durin the molding and pressing operation throng the meshes of the cloth.

' In Figures 11 and 12 I have shown rubber button collets A and B applied'to base plates 0 and D in the usual way. The collets are of the same form as those extensively used but difierfrom others in having cloth a, b

embedded in their flanged heads. In this way the flanged portions of the heads are greatly strengthened, undue bending of the flanges when employed in connection with the loops of hose supporters, is avoided, and

the separation of the collets from the posts is prevented. -It will be observed by reference to Figure 13' that the rubber extends through the meshes of the cloth and binds together the material on opposite sides of the cloth.

Two forms of button collets are illustrated. The method of manutactureis substantially the same, but the form of the molds is somewhat different.

To produce thecollets shown in Figures I and 2 I may employ three mold sections or members E, F and G. The section E is recessed at e to give form to the outer portion of the heads of the colletsand this section carries posts or pins efor producing the central openings in the collets. The posts carry collars 6 adapted to form the recesses which receive the heads of the rivets as indicated at R in Figure 11.

Section F is recessed at f to give form to the inner or lower part of the collet heads and also at f to give form to the collet shanks. I

The section G is formed with holes g to receive the outer ends of the pins 6'.

The mold sections are in practice adapted to produce several hundred collets at one operation. To do this a sheet of cloth X and a sheet of unvulcanized rubber Y 1S placed between two of the sections as indi= cated in Figure 3 and the mold sections are brought press. When power is applied to the press, the pins e are forced through the cloth and the rubber (Figure 4) and then as soon as the section F is forced to its full extent towardthe section E, the rubber is spread and made to fill the recesses in the manner indicated in Figure'5. It willbe observed that in this operation the whole sheet 18 pressed in such manner as to fill the recesses of the mold, materialbeing taken from the sheet between the recesses. \Vhen the pressing operation is completed, the molded collets are connected by a relativelythin sheet.

' of material as indicated in Figure 5.

In the pressing operation, the rubber is forced through the meshes of the fabrlc 1n the manner indicated in Figure 13 and thus the material on opposite sides of the fabric is firmlybound together. h

The sheet of collets maybe vulcan zed 1n the usual way and the collets may-be out together and placed in a suitable vices and may be tumbled or finished in the usual way. I

The'oblon collets shown .in Figure 12 and also in Figures 6 and 7 may be produced in a similar way but the form of the mold is somewhat different. In this case the section H carries pins h to produce holes I) in the collets. The section I has openings 2' adapted to form the shanks b and the lower parts of the heads of the collets and the section J has recesses j to form the heads or outer portions of the heads. The cloth sheet X and the rubber sheet Y are placed between the sections I and J in the manner indicated in Figure 8 and when pressure is applied, the recesses of the mold sections will be filled and form given to the Figure 10. The holes 1) formed in the collets b the pins h are adapted to receive heade posts S which connect the collets to the base plate D in the manner indicated in Figure 12.

The collets produced in the manner hereinbefore described are much stronger and more serviceable than those heretofore made, this result being largely due to the fact that the embedded cloth so surrounds the post hole as to strengthen that part of the collet which extends under the head or flange of the post or posts which secures the collet to the base plate. 7

While I-have shown and described my invention as embodied in collets for hose sup porter buttons, it will be understood that it may be applied to button collets or button members of other forms.

This application is a division of my application for patent filed June 30, 1922, No. 572,045, in which application claims are made to the article hereinbefore described.

I claim as my invention The herein described method of forming rubber button members which consists in placing between suitable mold members a sheet of cloth and a sheet of'rubber, pressing the mold section together to give form to the button members while connected by a thin sheet, then. 'vulcanizing and subseuently cutting the-button members from t e sheet and finishing them in the usual EMORY WARD STEARNS. 

